I have just sent a fix for this bug to Playdate for review. Thanks for catching it and I am very glad to hear you are enjoying the game! Didn't even think about it draining battery while idle. During all my testing I likely had my device plugged into my computer and never noticed. Not sure if there is anything I can do about this.
Fantastic news! Thank you for your hard work! lol Ya I have no doubt that while you were working you were too deep in it! lol. While a game is running it almost doesn't matter, but I did set the playdate to not go idle, but they ONLY have an option to not go idle while plugged in. Not sure if it's too much of an issue because tbh the battery doesn't last super long if a game is running. Thank you for checking out our feedback! <3